Lessons subheading is too small in Course Outline block

[merkushin]

There are a few requests from users that the "Lessons" subheading in the course outline is too small.
At the same time, it is impossible to customize the size of that subheading through Site Editor.

Steps to Reproduce

1. Create a course with modules and lessons.
2. Go to the frontend and open the course outline.

What I Expected

"Lessons" subheading is readable.

What Happened Instead

Subheading is too small.

PHP / WordPress / Sensei LMS version

7.2/6.2/4.13.1

Screenshot / Video

Context / Source

p1682995692800859-slack-C02P7FHLVR9
6254780-zd-woothemes

Possible Solution

We could easily bump it up to 20px, and increase the padding top & bottom to 10px, instead of 5 right now.

p1683015371488429/1682995692.800859-slack-C02P7FHLVR9

This should be done across all theme variations.

Note:
We should be careful not to make the "Lessons" text bigger than the name of the module. For example, the module name for the Blue variation has a font size of 19.8px, so changing "Lessons" text to 20px would make it larger than the module, which is not what we want. Given this, we'll likely need to bump the font size of the module proportionally as well.

[github-actions]

Support References

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• 6254780-zen